Almost a million Facebook users had their block list unblocked by a bug

Facebook has revealed via a blog post that a bug, active between May 29 and June 5, had messed with over 800,000 users’ block list over that one-week period, accidentally unblocking people the affected users had previously blocked.

While the social media giant claims that no friendships that were previously ended had been reestablished, the bug did allow posts to be shared with “a wider audience”.

“While someone who was unblocked could not see content shared with friends, they could have seen things posted to a wider audience, for example pictures shared with friends of friends,” explained Facebook’s chief privacy officer Erin Egan.

Of the affected accounts, 83% had “only one person they had blocked temporarily unblocked”. While that may sound harmless – affecting only a tiny fraction of the 2.4 billion Facebook users – the bug isn’t good news for anyone using Facebook’s blocking feature to protect themselves from abuse and harassment.

Image courtesy: Facebook

Image courtesy: Facebook

“We know that the ability to block someone is important – and we’d like to apologize and explain what happened,” Egan added.

Facebook says the bug has been fixed and has begun informing affected users via a pop-up message. 

While it’s admirable that the company has publicly disclosed the news of the bug, it’s another hard hit on the company’s already-tarnished public perception. The platform is still reeling from the aftermath of the Cambridge Analytica scandal, with accusations of deceiving users into sharing personal information being hurled at it by European consumer groups.

Sharmishta Sarkar
Managing Editor (APAC)

While she's happiest with a camera in her hand, Sharmishta's main priority is being TechRadar's APAC Managing Editor, looking after the day-to-day functioning of the Australian, New Zealand and Singapore editions of the site, steering everything from news and reviews to ecommerce content like deals and coupon codes. While she loves reviewing cameras and lenses when she can, she's also an avid reader and has become quite the expert on ereaders and E Ink writing tablets, having appeared on Singaporean radio to talk about these underrated devices. Other than her duties at TechRadar, she's also the Managing Editor of the Australian edition of Digital Camera World, and writes for Tom's Guide and T3.